A Study of the Efficacy of Prolonged-Release Melatonin Versus Placebo in Diabetic Patients Suffering From Insomnia

A Randomized Double-Blind, Crossover Study Comparing the Efficacy of Prolonged-Release Melatonin Versus Placebo in a 3 Week Treatment of Diabetic Patients Suffering From Insomnia

Objective - Type 2 uncontrolled diabetic patients often have low endogenous melatonin and suffer from sleep disorders. The effect of a prolonged-release melatonin (PRM) formulation on glucose lipid metabolism and sleep is studied in type 2 diabetes patients with insomnia.

Methods: In a randomized, double-blind, crossover study, the subjects were treated for 3 weeks with 1 tablet per night of 2 mg prolonged-release melatonin or placebo, with one week washout period in between. Sleep was objectively monitored by wrist actigraphy. Fasting glucose, fructosamine, insulin, C-peptide, triglycerides, cholesterol (total, HDL and LDL) and some antioxidants were assessed at baseline and end of each period.

Inclusion Criteria:

• Diabetic patients with proven presence of the disease who complained of insomnia.

Exclusion Criteria:

• Patients with liver or renal problems (serum creatinine above 1.5 mg/dL).